SUBSCRIBE

Breaking News on Supplements, Health & Nutrition - Europe US edition | APAC edition

News > Research

Read more breaking news

 

 

Chondroitin sulphate linked to lower knee swelling

By Stephen Daniells , 03-Oct-2008

Supplements of chondroitin sulphate may reduce swelling in the knee of osteoarthritis sufferers, according to new analysis of GAIT II.

Marc Hochberg from University of Maryland, School of Medicine and Daniel Clegg from the University of Utah, School of Medicine performed a post hoc analysis of the data from the second arm of the Glucosamine/Chondroitin Arthritis Intervention Trial (GAIT II) and found that people with milder forms of osteoarthritis may benefit the most from chondroitin sulphate supplementation.

Hochberg and Clegg report their findings in the journal Osteoarthritis and Cartilage.

Earlier this week researchers involved in GAIT II reported that supplements of chondroitin sulphate and glucosamine, alone or in combination, may not positively affect joint health.

Almost 400 patients with osteoarthritis of the knee participated in the 24-month, double-blind, placebo-controlled study, that is part of

Glucosamine is extracted from the shell of crabs, lobster and shrimps. Cargill also markets a non-animal, non-shellfish derived product. The ingredient is often used in combination with chondroitin sulphate, extracted from animal cartilage, such as sharks.

According to the Nutrition Business Journal, US sales for these combined supplements were $810 million (€563 million) in 2005.

Previous studies, including the $14m Glucosamine/chondroitin Arthritis Intervention Trial (GAIT), sponsored by the National Institute of Health, have reported positive results, while other have reported null results, leaving the subject clouded in uncertainty.

Post-study data analysis

Hochberg and Clegg looked at data from 1,583 people with an average age of 58.6 at the start of the study. Of these participants, 64 per cent were women, and 26.9 per cent of the study population suffered from swollen joints.

The statistical analysis showed that people with lower scores on the Kellgren/ Lawrence [K/L] scale, a well-established scale for osteoarthritis, were substantially more responsive to the potential salutary effects of chondroitin sulphate than those with” higher scores, said the researchers.

Study fall-out

Following publication of results earlier this week, industry representatives in the US threw scorn on a study. The Washington-DC-based dietary supplements trade groups the Natural Products Association (NPA) and the Council for Responsible Nutrition (CRN) called the study’s findings irrelevant, as did a member of the study’s oversight committee.

“This study’s findings are useless and I am surprised it has been published at all,” said Jason Theodosakis, oversight committee member and assistant professor of medicine at the University of Arizona.

Daniel Fabricant, PhD, vice president, scientific and regulatory affairs at NPA criticized the study design and conclusions.

“Even the researchers seem to question their own findings,” he said. “If you look to the total body of research there is plenty of evidence that glucosamine and chondroitin do work for the estimated 20m Americans with osteoarthritis.”

Fabricant’s counterpart at CRN, Andrew Shao, PhD, called the results "perplexing and inconsistent" with the first GAIT results and other studies.

In the UK, about seven million people are reported to have long-term health problems associated with arthritis. Around 206m working days were lost in the UK in 1999-2000, equal to £18bn (€26bn) of lost productivity.

Osteoarthritis is estimated to affect 21 million people in the US.

Source: Osteoarthritis and CartilageOctober 2008, Volume 16, Supplement 3, Pages S22-S24“Potential effects of chondroitin sulfate on joint swelling: a GAIT report”Authors: M.C. Hochberg, D.O. Clegg

Related products

Live Supplier Webinars

Polyphenols tipped to become the way to innovate in Sports Nutrition
Fytexia
Alpha & Omega in Sports Nutrition – Using Omega 3’s and A-GPC to improve performance and recovery.
KD Pharma
Orally bioavailable standardized botanical derivatives in sport nutrition: special focus on recovery in post-intense physical activities
Indena
Collagen in motion: move freely and keep your injuries in check
Leading manufacturer of gelatine and collagen peptides
Life’s too short for slow proteins. Whey proteins hydrolysates: Fast delivery for enhanced performance
Arla Foods Ingredients
What it Takes to Compete and Win in Today’s Sports Nutrition Market
Capsugel
Sports Nutrition Snapshot: Key regional drivers and delivery format innovations
William Reed Business Media
Gutsy performance: How can microbiome modulation help athletes and weekend warriors
William Reed Business Media
Pushing the boundaries: Where’s the line between ‘cutting edge nutrition’ and doping
William Reed Business Media

On demand Supplier Webinars

High-amylose maize starch may reduce the risk of type 2 diabetes: what does this qualified health claim mean?
Ingredion
Balancing Innovation and Risk in Sports Nutrition Ingredients
NSF-International
Explaining bio-hacking: is there a marketing opportunity for food companies?
William Reed Business Media
Personalized Nutrition – how an industry can take part in shaping the future of Nutrition
BASF Nutrition & Health
Find out Nutritional and ingredient lifecycle solutions and strategies!
Roquette
Is the time rIpe for I-nutrition?
William Reed Business Media
The Advantage of Outsourcing Fermentation-based Manufacturing Processes
Evonik Health Care
All supplier webinars